Control: tag -1 - moreinfo patch On Thu, 2017-07-06 at 02:47 +0200, Andreas Pflug wrote: > Am 05.07.17 um 19:31 schrieb Ben Hutchings: > > Control: reassign -1 src:linux 4.9.30-2+deb9u2 > > Control: tag -1 upstream patch moreinfo > > > > On Thu, 2017-06-29 at 19:30 +0200, Andreas Pflug wrote: > > > Package: linux-image-4.9.0-3-amd64 > > > > > > Version: 4.9.30-2+deb9u2 > > > > > > When starting an ancient Windows Server 2003 virtual machine on a fully > > > updated stretch host, the host will crash repeatably about 10 seconds > > > after start. Kernel logging was implemented over netconsole, so I could > > > capture the kernel output stating > > > > > > kernel BUG at /build/linux-9uDFZV/linux-4.9.30/drivers/nvme/host/pci.c:495! > > > > A single log line is rarely enough to be useful... > > > > > Hardware is dual E5-2620v4 on Supermicro 10DRI-T with two SAMSUNG > > > MZQLW960HMJP-00003 NVME disks (mdadm RAID-1). > > > > > > drivers/nvme/host/pci.c wasn't changed up to 4.11.8, the crashing > > > function nvme_setup_prps still the same in 4.12rc7, so I guess the bug > > > is still there. > > > > ...but I happened to see a fix that mentioned this function. > > > > This should make its way into a stable update eventually, but perhaps > > you could confirm that the attached patch fixes your problem by > > following these instructions: > > https://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official > > The description of the patch seems very promising, but using the > 4.9.30-2+deb9u2a~test kernel the bug happens as well. > Log is attached, cut after 460 lines: the last trace on CPU15 is > repeated all over again, eventually leading to "Fixing recursive fault > but reboot is needed!" Thanks for checking. Ben. -- Ben Hutchings Man invented language to satisfy his deep need to complain. - Lily Tomlin
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